Control of Photomechanical Crystal Twisting by Illumination Direction

Control of Photomechanical Crystal Twisting by Illumination Direction

Photomechanical molecular crystals have been investigated as mesoscopic photoactuators. Here, we report how the photomechanical twisting of 1,2-bis­(2-methyl-5-phenyl-3-thienyl)­perfluorocyclopentene (1a) crystals depends on illumination direction. The ribbon-like crystal of 1a could be successfully...

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Veröffentlicht in:Journal of the American Chemical Society 2018-03, Vol.140 (12), p.4208-4212
Hauptverfasser: Kitagawa, Daichi, Tsujioka, Hajime, Tong, Fei, Dong, Xinning, Bardeen, Christopher J, Kobatake, Seiya
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container_issue 12
container_start_page 4208
container_title Journal of the American Chemical Society
container_volume 140
creator Kitagawa, Daichi
Tsujioka, Hajime
Tong, Fei
Dong, Xinning
Bardeen, Christopher J
Kobatake, Seiya
description Photomechanical molecular crystals have been investigated as mesoscopic photoactuators. Here, we report how the photomechanical twisting of 1,2-bis­(2-methyl-5-phenyl-3-thienyl)­perfluorocyclopentene (1a) crystals depends on illumination direction. The ribbon-like crystal of 1a could be successfully prepared by a sublimation method. The ribbon crystal exhibited reversible photomechanical crystal twisting upon alternating irradiation with ultraviolet (UV) and visible light. Moreover, changing the UV illumination direction with respect to the crystal resulted in different twisting modes, ranging from helicoid to cylindrical. Control of photomechanical crystal deformation by illumination direction provides a convenient and useful way to generate a variety of photomechanical motions from a single crystal.
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title Control of Photomechanical Crystal Twisting by Illumination Direction
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